CN104931752A - Current transformer waveform monitoring device and current transformer control system - Google Patents
Current transformer waveform monitoring device and current transformer control system Download PDFInfo
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- CN104931752A CN104931752A CN201510287307.9A CN201510287307A CN104931752A CN 104931752 A CN104931752 A CN 104931752A CN 201510287307 A CN201510287307 A CN 201510287307A CN 104931752 A CN104931752 A CN 104931752A
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Abstract
The invention discloses a current transformer waveform monitoring device and a current transformer control system. The monitoring device comprises a data acquisition module which acquires current transformer operation state related data required to be monitored in each operation cycle of a current transformer control algorithm according to the current transformer control algorithm so that monitoring data are obtained; a data acquisition module which is connected with the data acquisition module and used for converting the monitoring data according to the preset communication protocol; and a data display module which is connected with the data transmission module and used for visually displaying the data transmitted by the data transmission module so that current transformer waveform monitoring is realized. Compared with existing waveform monitoring devices, the device is high in real-time performance, and waveform of voltage and current outputted by the current transformer can be monitored in real time. Other hardware equipment does not need to be carried by debugging personnel when the waveform of the current transformer is monitored.
Description
Technical field
The present invention relates to Automatic Measurement Technique field, specifically, relate to a kind of current transformer waveform monitoring device and converter control system.
Background technology
In current transformer debug process, need the waveform of the physical quantity such as electric current, voltage, rotating speed by real-time monitored load end, thus adjust the parameter of current transformer according to these waveforms, with the actual demand making the performance of current transformer can meet user.
At present, the waveform of monitoring the physical quantity such as voltage, electric current, rotating speed of current transformer load end mainly adopts the mode of being observed the physical quantity waveform after sensor conversion by oscillograph.But this mode by oscillograph observation waveform needs to use cable that the data of sensor are transferred to oscillograph, and this also just causes the secondary connection at user scene, have impact on the debugging efficiency of current transformer.Meanwhile, oscillographic observation passage is limited, if need the physical quantity of observation many, then may need multiple oscillograph.In addition, because oscillographic volume ratio is comparatively large, this also causes inconvenience to carrying.
Summary of the invention
For solving the problem, the invention provides a kind of current transformer waveform monitoring device, described device comprises:
Data acquisition module, it gathers the data of the relevant current transformer running status monitored required for described current transformer control algolithm each cycle of operation according to current transformer control algolithm, obtain monitoring data;
Data transmission module, it is connected with described data acquisition module, for changing according to default communication protocol described monitoring data;
Data disaply moudle, it is connected with described data transmission module, and it carries out visual display for the data transmitted described data transmission module, thus realizes the monitoring to current transformer waveform.
According to one embodiment of present invention, described data acquisition module comprises: data acquisition unit, first memory and second memory, wherein,
The monitoring data collected is written in described first memory by described data acquisition unit, after described first memory is fully written, described first memory by stored data conversion storage in described second memory, to read monitoring data waiting for transmission by described data transmission module from described second memory.
According to one embodiment of present invention, described second memory comprises the first storage area and the second storage area, wherein,
Described first memory first by stored data conversion storage to described first storage area, when described first storage area is fully written, described first memory is by follow-up data conversion storage to described second storage area, and described data acquisition module notifies that described data transmission module reads data from described first storage area simultaneously.
According to one embodiment of present invention, described second memory is that double-port random reads storer or Double Data Rate synchronous DRAM.
According to one embodiment of present invention, described data transmission module reads data according to the agreement with described data acquisition module Block-matching in first task from described data acquisition module, by the deposit data that reads in buffer, and judge whether the data in described buffer reach preset data amount, if reached, then send semaphore to the second task;
After described second task receives described semaphore, the data in described buffer are changed according to default communication protocol.
According to one embodiment of present invention, described buffer is ring buffer.
According to one embodiment of present invention, described data disaply moudle adopts event model, and when there being data to reach described data disaply moudle, described data module produces event response to carry out visual display to the data received.
According to one embodiment of present invention, described data disaply moudle adopts drawing dedicated thread to carry out waveform drawing according to the data received.
Present invention also offers a kind of converter control system, described system comprises the current transformer waveform monitoring device according to any one of claim 1 ~ 8.
According to one embodiment of present invention, described system comprises current transformer control end and debugging end, wherein, the data acquisition module of described current transformer waveform monitoring device and data transmission module are integrated in described current transformer control end, and described data disaply moudle is integrated in described debugging end.
The present invention utilizes the existing framework of converter control system, provide a kind of new current transformer waveform monitoring device, the carrier of this device is the control system of debugging computer and current transformer, commissioning staff is not needed to carry other hardware, it can not only observe the signal that sensor gathers, can also any controling parameters of supervisory control program.Meanwhile, compared to existing waveform monitoring device, the real-time of device provided by the present invention is high, its can real time monitoring current transformer export the waveform such as voltage, electric current.In addition, this device can the data of each cycle of operation in Monitor and Control algorithm routine, and its precision is higher.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing shows the various embodiments of each aspect of the present invention, and they and instructions one are used from and explain principle of the present invention.Those skilled in the art understand, specific embodiment shown in the drawings is only exemplary, and they are not intended to limit the scope of the invention.Should be realized that, in some examples, the element be illustrated also can be designed as multiple element, or multiple element also can be designed as an element.In some examples, the element being shown as the internal part of another element also may be implemented as the external component of this another element, and vice versa.In order to clearly, in detail exemplary embodiment of the present invention understand more thorough to enable the advantage of those skilled in the art to each aspect of the present invention and feature thereof, existing accompanying drawing to be introduced, in the accompanying drawings:
Fig. 1 is the structural representation of converter control system according to an embodiment of the invention;
Fig. 2 is the structural representation of data acquisition module according to an embodiment of the invention;
Fig. 3 is the schematic diagram of data transmission module according to an embodiment of the invention.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
Meanwhile, in the following description, many details have been set forth for illustrative purposes, to provide thorough understanding of embodiments of the invention.But, it will be apparent to those skilled in the art that the present invention can detail here or described ad hoc fashion implement.
For problems of the prior art, present embodiments provide a kind of new current transformer waveform monitoring device and converter control system, Fig. 1 shows the structural representation of this system.
As shown in Figure 1, the converter control system that the present embodiment provides comprises current transformer control end 100 and debugging end 101.Wherein, current transformer control end 100 is configured with corresponding control program, to control the running status that current transformer adjusts himself.Debugging end 101 is connected with current transformer control end 100, and it can present the current running state information of current transformer visually to user, such as, show the information such as the electric current of current transformer load end, voltage and rotating speed.User can the corresponding operational factor of information to current transformer according to debugging end 100 adjust, thus under making current transformer be operated in required parameter.
Mostly existing current transformer waveform monitoring device is oscillograph, and the problem of secondary connection that the words using oscillograph to monitor as current transformer waveform will cause at user scene, also need to configure multiple oscillograph simultaneously in some cases and complete monitoring to the multiple operational factor of current transformer.
For the problems referred to above, the current transformer waveform monitoring device that the present embodiment provides has been integrated in converter control system.Particularly, as shown in Figure 1, current transformer waveform monitoring device comprises data acquisition module 102, data transmission module 103 and data disaply moudle 104.Wherein, in the present embodiment, data acquisition module 102 and data transmission module 103 are integrated in current transformer control end 100, and data disaply moudle 104 is integrated in debugging end 101.
Data acquisition module 102 can gather the data of the relevant current transformer running status monitored required for current transformer control algolithm each cycle of operation according to current transformer control algolithm, thus obtains monitoring data.In the present embodiment, the data that data acquisition module 102 gathers comprise output current, the data such as output voltage and frequency of current transformer.It should be noted that, in other embodiments of the invention, according to actual needs, data acquisition module 102 can also gather other unlisted reasonable data, the present invention is not limited thereto.
The structural representation of data acquisition module 102 that theres is provided of the present embodiment as shown in Figure 2.
As shown in Figure 2, data acquisition module 102 comprises: data acquisition unit 201, first memory 202 and second memory 203.Wherein, first memory 202 be connected to data acquisition unit 201 and the second memory block you between 203.In the present embodiment, first memory 202 have employed random-access memory, and second memory 203 have employed double-port random and reads storer (i.e. DPRAM).Wherein, second memory 203 comprises two storage areas, i.e. the first storage area 203a and the second storage area 203b.First storage area 203a is all connected with the first storage unit 202 with the second storage area 203b.
It should be noted that, in other embodiments of the invention, first memory 202 and/or second memory 203 can also adopt other rational storeies, such as in one embodiment of the invention, first memory 202 and/or second memory 203 can also adopt Double Data Rate synchronous DRAM (i.e. DDRRAM) etc., the present invention is not limited thereto.
In the process run, the monitoring data collected is written to first memory 202 by data acquisition unit 201.After first memory 202 is fully written, the data conversion storage that it can store by first memory 202 is in the first storage area 203a in second memory 203.When the first storage area 203a is fully written, follow-up data can be write in the second storage area 203b of second memory 203 by first memory 202.When the first storage area is fully written, second memory 203 also can pass through notice of settlement data transmission module 103, to wait for that data transmission module 103 reads data from the first storage area 203a.When the second storage area 203b is fully written, follow-up data are write in the first storage area 203a of second memory 203 by first memory 202.When the second storage area 203b is fully written, second memory 203 also he can take notice of settlement data transmission module 103.Circulation like this is until receive halt instruction.
It should be noted that, in other embodiments of the invention, the number of the storage area comprised in second memory 203 can also be more than 3 or 3, the present invention is not limited thereto.
Again as shown in Figure 1, data transmission module 103 is connected between data acquisition module 102 and data disaply moudle 104, it can transmit to data acquisition module 102 monitoring data come and process, and carries out changing to facilitate carrying out data transmission according to default communication protocol.Particularly, in the present embodiment, what adopt between data transmission module 103 and data disaply moudle 104 is TCP communications protocol.Certainly, in other embodiments of the invention, also adopt other rational communications protocol to carry out communication between data transmission module 103 and data disaply moudle 104, such as udp protocol etc., the present invention is not limited thereto.
What Fig. 3 showed data transmission module 103 in the present embodiment realizes schematic diagram.
As shown in Figure 3, in the present embodiment, data transmission module 103 have employed the mode of 2 tasks and toroidal memory to carry out process and the forwarding of data.Particularly, data transmission module 103 reads data according to the agreement matched with data acquisition module 102 in first task from second memory, and the data read are stored in Circular buffer.
Data transmission module 103 can judge the data whether enough (whether the data namely stored in Circular buffer reach predetermined number) stored in Circular buffer, if enough, then send preset signals amount to the second task, otherwise continue to think in Circular buffer stored in data.After second task receives preset signals amount, just the data in Circular buffer are changed according to TCP communications protocol, and the data be converted to are sent to data disaply moudle 104.
Again as shown in Figure 1, data disaply moudle 104 is connected with data transmission module 103, and its data that can transmit data transmission module 103 carry out visual display.Particularly, in the present embodiment, what data transmission module 104 adopted is event model.When arriving data disaply moudle 104 by data, data disaply moudle 104 produces event response, carrys out the data that display data transmissions module 103 transmits.
In the present embodiment, the data that data disaply moudle 104 is transmitted by the next data cached transport module 103 of Circular buffer.Meanwhile, data disaply moudle 104 adopts special thread to carry out graphic plotting.If there are data in its Circular buffer, so data disaply moudle 104 will go out corresponding oscillogram according to these Plotting data, analyzes for user.
It should be noted that, in different embodiments of the invention, data acquisition module 102 and data transmission module 103 both can be configured in two, and independently (such as data acquisition module 102 configures in dsp in chip, it is medium that data transmission module is configured in CPU), also can be configured in same double-core chip, the present invention is not limited thereto.
Simultaneously, in different embodiments of the invention, communication modes between data transmission module 103 and data disaply moudle 104 both can be ethernet communication, and also can be other rational communication modes (such as light communications etc.), the present invention be not limited thereto equally.
Current transformer waveform monitoring device needs to monitor the waveform such as voltage, electric current that current transformer exports in real time, for commissioning staff's problem analysis, solves fault, thus heightens debugging efficiency.But, at present mainly use oscillograph observe the data after being changed by sensor, adopt carry out in this way waveform monitor there is many drawbacks.Such as: oscillograph volume is large, Heavy Weight, carry inconvenience, needs in use, at Commissioning field connection cable, to affect debugging efficiency; Oscillograph can only observe the data after being changed by sensor, helpless etc. to the controling parameters in control program.
The present invention utilizes the existing framework of converter control system, provide a kind of new current transformer waveform monitoring device, the carrier of this device is the control system of debugging computer and current transformer, commissioning staff is not needed to carry other hardware, it can not only observe the signal that sensor gathers, can also any controling parameters of supervisory control program.Meanwhile, compared to existing waveform monitoring device, the real-time of device provided by the present invention is high, its can real time monitoring current transformer export the waveform such as voltage, electric current.In addition, this device can the data of each cycle of operation in Monitor and Control algorithm routine, and its precision is higher.
It should be understood that disclosed embodiment of this invention is not limited to ad hoc structure disclosed herein, treatment step or material, and the equivalent of these features that those of ordinary skill in the related art understand should be extended to substitute.It is to be further understood that term is only for describing the object of specific embodiment as used herein, and and do not mean that restriction.
Special characteristic, structure or characteristic that " embodiment " mentioned in instructions or " embodiment " mean to describe in conjunction with the embodiments comprise at least one embodiment of the present invention.Therefore, instructions various places throughout occur phrase " embodiment " or " embodiment " might not all refer to same embodiment.
Conveniently, multiple project, structural unit and/or component units can appear in common list as used herein.But each element that these lists should be interpreted as in this list is identified as member unique separately respectively.Therefore, when not having reverse side to illustrate, in this list, neither one member only can appear in common list the actual equivalent of other member any being just interpreted as same list based on them.In addition, can also come together with reference to various embodiment of the present invention and example together with for the alternative of each element at this.Should be understood that, these embodiments, example and substitute and be not interpreted as equivalent each other, and be considered to representative autonomous separately of the present invention.
Although above-mentioned example is for illustration of the principle of the present invention in one or more application, but for a person skilled in the art, when not deviating from principle of the present invention and thought, obviously can in form, the details of usage and enforcement does various amendment and need not creative work be paid.Therefore, the present invention is limited by appending claims.
Claims (10)
1. a current transformer waveform monitoring device, is characterized in that, described device comprises:
Data acquisition module, it gathers the data of the relevant current transformer running status monitored required for described current transformer control algolithm each cycle of operation according to current transformer control algolithm, obtain monitoring data;
Data transmission module, it is connected with described data acquisition module, for changing according to default communication protocol described monitoring data;
Data disaply moudle, it is connected with described data transmission module, and it carries out visual display for the data transmitted described data transmission module, thus realizes the monitoring to current transformer waveform.
2. device as claimed in claim 1, it is characterized in that, described data acquisition module comprises: data acquisition unit, first memory and second memory, wherein,
The monitoring data collected is written in described first memory by described data acquisition unit, after described first memory is fully written, described first memory by stored data conversion storage in described second memory, to read monitoring data waiting for transmission by described data transmission module from described second memory.
3. device as claimed in claim 2, it is characterized in that, described second memory comprises the first storage area and the second storage area, wherein,
Described first memory first by stored data conversion storage to described first storage area, when described first storage area is fully written, described first memory is by follow-up data conversion storage to described second storage area, and described data acquisition module notifies that described data transmission module reads data from described first storage area simultaneously.
4. device as claimed in claim 2 or claim 3, is characterized in that, described second memory is that double-port random reads storer or Double Data Rate synchronous DRAM.
5. the device according to any one of Claims 1 to 4, it is characterized in that, described data transmission module reads data according to the agreement with described data acquisition module Block-matching in first task from described data acquisition module, by the deposit data that reads in buffer, and judge whether the data in described buffer reach preset data amount, if reached, then send semaphore to the second task;
After described second task receives described semaphore, the data in described buffer are changed according to default communication protocol.
6. device as claimed in claim 5, it is characterized in that, described buffer is ring buffer.
7. the device according to any one of claim 1 ~ 6, it is characterized in that, described data disaply moudle adopts event model, and when there being data to reach described data disaply moudle, described data module produces event response to carry out visual display to the data received.
8. the device according to any one of claim 1 ~ 7, is characterized in that, described data disaply moudle adopts drawing dedicated thread to carry out waveform drawing according to the data received.
9. a converter control system, is characterized in that, described system comprises the current transformer waveform monitoring device according to any one of claim 1 ~ 8.
10. system as claimed in claim 9, it is characterized in that, described system comprises current transformer control end and debugging end, wherein, the data acquisition module of described current transformer waveform monitoring device and data transmission module are integrated in described current transformer control end, and described data disaply moudle is integrated in described debugging end.
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Application publication date: 20150923 |